286 Express Card (250-1035) Installation Faxback Doc. # 5602
TOOLS REQUIRED
* Phillips screwdriver
* Small flat-bladed screwdriver
* IC extraction tool (provided)
INSTALLATION PROCEDURE FOR A TANDY 1000SX
1. Turn off the computer. Unplug your computer, monitor, and all peripherals.
Also unplug all AC power cords from the wall outlet.
2. Remove the screws and set them aside. Slide the computer's cover forward
to remove it.
3. Remove the bracket by lifting it straight up and off.
4. There are five expansion slots in the Tandy 1000 SX. You can install the
286 Express Card in any slot, but we suggest using the middle slot, the
one labeled J13. Remove the screw and cover plate for this slot and set
them aside.
5. Jot down the present setting for each of the motherboard's option switches.
This precaution is necessary in case you accidentally change
one of the switches while installing the 286 Express Card.
CAUTION: The boards and components you will be handling during this procedure
are easily damaged by rough handling or electrostatic discharge. Be extremely
careful when handling them. Lay the boards on a non-conductive, padded
surface when possible, and store or carry chips on non-conductive anti-static
foam.
Be especially careful when working on a carpeted surface or when humidity is
low, such as during the heating season. To avoid damage from static, always
touch a grounded metal surface before touching any components.
6. Use the IC extraction tool to remove your computer's 8088 processor chip.
Working slowly and carefully, pry up on one side, then the other, little
by little, until the chip comes free. If you try to do too much too soon
you'll bend the chip's leads, making it hard to reinsert later.
7. Immediately plug the 8088 processor into the daughterboard.
Orient the processor so that the notch is pointing away from the
I/O cable's connector. Be certain that all pins are aligned with socket
holes before pressing the chip into place.
8. If you are installing the 80287 math co-processor, plug it into the empty
socket on the 286 Express Card shown in Figure 9.
Make sure that pin 1 on the 80287 math co-processor is matched up wit pin 1
on the socket and that all pins are aligned before pressing the chip into
place.
Tandy computers have the ability to sense the presence or absence of a math
co-processor, so there are no switches to set, or jumpers to change.
9. One end of the I/O cable comes already attached to the daughterboard.
Carefully plug the other end into the 8088 socket and one with the cable
installed. Note the location of pin 1.
Make sure that all pins are aligned before pressing the I/O cable's plug into
the socket.
Note that pin 21 of the cable socket is clipped off at the factory: your cable
is not defective.
10. Plug the daughterboard into the 286 Express Card as shown in Figure 11.
11. Carefully plug the 286 Express Card into the motherboard.
12. Compare the present setting of the motherboard's option switches to the
notes you made prior to installing the 286 Express Card. Restore any
switch that was accidentally changed to its original setting.
13. Re-use the rear cover plate screw to attach the 286 Express Card to the
back of your computer's chassis.
14. Slide the computer's cover back on and replace its mounting screws.
15. Reconnect the power cord, monitor, and keyboard.
16. Apply power. If you have done everything correctly, your computer should
successfully boot up and display the following start up message. if your
system doesn't boot up, see Chapter 7--Troubleshooting.
286 Express (tm) GACD V x.xx
(C) 1987 PC Technologies, Inc.
System booted on 8088 CPU
[8087 installed]
[80287 installed]
Processor switching supported
Cache size = 8KB Cache fence - 640KB
[Press ALT and Right Shift to toggle the cache.]
[Press ALT < to change to the 8088 and ALT> to change to the 80286.]
Depending upon how your system is configured, the statements may not appear as
shown, and those enclosed in brackets may not be displayed at all. For
instance:
* The math co-processor statements should only be displayed if you have the
associated co-processor installed.
* The cache fence should reflect the amount of memory set in switches 4-7.
* If you didn't list the cache parameter in the CONFIG.SYS file, the cache
"Hot Key" message will not be displayed.
* If you didn't list the CPU parameter in the CONFIG.SYS file, the processor
switching "Hot Key" message will not be displayed.
INSTALLATION PROCEDURE FOR A TANDY 1000A
1. Turn your computer off. Unplug your computer, monitor, and all peripherals.
Also unplug all AC power cords from the wall outlet.
2. Remove the screws shown in Figure 13 and set them aside. Slide the
computer's cover forward to remove it.
3. There are three expansion slots in the Tandy 1000A. See Figure 14. You can
install the 286 Express Card in any slot, but we suggest using the outside
slot, the one labeled J9. Remove the screw and cover plate for the desired
slot and set them aside.
CAUTION: The boards and components you will be handling during this procedure
are easily damaged by rough handling or electrostatic discharge. Be extremely
careful when handling them. Lay the boards on a non-conductive, padded surface
when possible, and store or carry chips on non-conductive anti-static foam.
Be especially careful when working on a carpeted surface or when humidity is
low, such as during the heating season. To avoid damage from static, always
touch a grounded metal object before touching any components.
4. Use the IC extraction tool as shown in Figure 15 to remove your computer's
8088 processor chip. Working slowly and carefully, pry up on one side, then
the other, little by little, until the chip comes free. If you try to do
too much too soon you'll bend the chip's leads making it hard to re-insert
later.
5. Immediately plug the 8088 processor into the daughterboard as shown in
Figure 16. Orient the processor so that the notch is pointing away from
the I/O cable's connector. Be certain that all pins are aligned with
socket holes before pressing the chip into place.
6. If you are installing an 80287 math co-processor, plug it into the empty
socket on the 286 Express Card shown in Figure 17.
Make sure that pin 1 on the 80287 math co-processor is matched up with pin 1
on the socket and that all pins are aligned before pressing the chip into
place.
Tandy computers have the ability to sense the presence or absence of a math
co-processor, so there are no switches to set, or jumpers to change.
7. One end of the I/O cable comes already attached to the daughterboard.
Carefully plug the other end into the 8088 socket on your computer's
motherboard. Figure 18 shows the empty 8088 socket and how it should look
after the cable is installed. Note the location of pin 1.
Make sure that all pins are aligned before pressing the I/O cable's plug into
the socket.
Note that pin 21 of the cable socket is clipped off at the factory: your cable
is not defective.
8. Plug the daughterboard into the 286 Express Card as shown in Figure 19.
9. Carefully plug the 286 Express Card into the motherboard as shown in
Figure 20.
10. Re-use the rear cover plate screw to attach the 286 Express Card to the
back of your computer's chassis.
11. Slide the computer's cover back on. As the cover is replaced, fit the
I/O cable folds into the "channel" at the left side of the cover. See
Figure 21.
12. Reconnect the power cord, monitor, and keyboard.
13. Apply power. If you have done everything correctly, your computer should
successfully boot up and display the following start up message. If your
system doesn't boot up, see Chapter 7--Troubleshooting.
286 Express(tm) GACD V x.xx
(C) 1987 PC Technologies, Inc.
System booted on 8088 CPU
[8087 installed]
[80287 installed]
Processor switching supported
Cache size = 8KB Cache fence = 640KB
[Press ALT and Right Shift to toggle the cache.]
[Press ALT < to change to the 8088 and ALT > to change to the 80286.]
Depending upon how your system is configured, the statements may not appear as
shown, and those enclosed in brackets may not be displayed at all. For
instance:
* The math co-processor statements should only be displayed if you have the
associated co-processor installed.
* The cache fence should reflect the amount of memory set in switches 4-7.
* If you didn't list the cache parameter in the CONFIG.SYS file, the cache
"Hot Key" message will not be displayed.
* If you didn't list the CPU parameter in the CONFIG.SYS file, the processor
switching "Hot Key" message will not be displayed.
INSTALLING THE 286 EXPRESS CARD IN A TANDY 1000
INSTALLATION PROCEDURE
NOTE: The daughterboard supplied with this product will not work with Tandy
1000 computers. To use this product in a Tandy 1000, you must obtain a
special daughterboard (AXX-7130) from your Radio Shack dealer.
1. Turn your computer off. Unplug your computer, monitor, and all peripherals.
Also unplug all AC power cords from the wall outlet.
2. Remove the screws shown in Figure 22 and set them aside. Slide the
computer's cover forward to remove it.
3. There are three expansion slots in the Tandy 1000. See Figure 23. You can
install the 286 Express Card in any slot, but we suggest using the outside
slot, the one labeled J10. Remove the screw and cover plate for the desired
slot and set them aside.
CAUTION: The boards and components you will be handling during this procedure
are easily damaged by rough handling or electrostatic discharge. Be extremely
careful when handling them. Lay the boards on a non-conductive, padded surface
when possible, and store or carry chips on non-conductive anti-static foam.
Be especially careful when working on a carpeted surface or when humidity is
low, such as during the heating season. To avoid damage from static, always
touch a grounded metal object before touching any components.
4. Use the IC extraction tool as shown in Figure 24 to remove your computer's
8088 processor chip. Working slowly and carefully, pry up on one side,
then the other, little by little, until the chip comes free. If you try
to do too much too soon you'll bend the chip's leads making it hard to
re-insert later.
5. Immediately plug the 8088 processor into the daughterboard as shown in
Figure 25. Orient the processor so that the notch is pointing away from
the I/O cable's connector. Be certain that all pins are aligned with
socket holes before pressing the chip into place.
6. If you are installing an 80287 math co-processor, plug it into the empty
socket on the 286 Express Card shown in Figure 26.
Make sure that pin 1 on the 80287 math co-processor is matched up with pin 1
on the socket and that all pins are aligned before pressing the chip into
place.
7. One end of the I/O cable comes already attached to the daughterboard.
Carefully plug the other end into the 8088 socket on your computer's
motherboard. Figure 27 shows the empty 8088 socket and how it should look
after the cable is installed. Note the location of pin 1.
Make sure that all pins are aligned before pressing the I/O cable's plug into
the socket.
Note that pin 21 of the cable socket is clipped off at the factory: your cable
is not defective.
8. Plug the daughterboard into the 286 Express Card as shown in Figure 28.
9. Carefully plug the 286 Express Card into the motherboard as shown in
Figure 29.
10. Re-use the rear cover plate screw to attach the 286 Express Card to the
back of your computer's chassis.
11. Slide the computer's cover back on. As the cover is replaced, fit the
I/O cable folds into the "channel" at the left side of the cover. See
Figure 30.
12. Reconnect the power cord, monitor, and keyboard.
13. Apply power. If you have done everything correctly, your computer should
successfully boot up and display the following start up message. If you
system doesn't boot up, see Chapter 7--Troubleshooting.
286 Express(tm) GACD V x.xx
(C) 1987 PC Technologies, Inc.
System booted on 8088 CPU
[8087 installed]
[80287 installed]
Processor switching supported
Cache size = 8KB Cache fence = 640KB
[Press ALT and Right Shift to toggle the cache.]
[Press ALT < to change to the 8088 and ALT > to change to the 80286.]
Depending upon how your system is configured, the statements may not appear
as shown, and those enclosed in brackets may not be displayed at all. For
instance:
* The math co-processor statements should only be displayed if you have the
associated co-processor installed.
* The cache fence should reflect the amount of memory set in switches 4-7.
* If you didn't list the cache parameter in the CONFIG.SYS file, the cache
"Hot Key" message will not be displayed.
* If you didn't list the CPU parameter in the CONFIG.SYS file, the processor
switching "Hot Key" message will not be displayed.
(DTC/jlc-03/28/94)